Lasting machine



Aug. 13, 1940.l w. T. B. ROBERTS LASTING MACHINE Filed Feb. 24, 1939 2 Sheets-Shea*I 1 A118' I3, 1940- w. T. B. ROBERTS 2,211,075

LASTING MACHINE Fild Feb. 24, 1939 2 Sheets-Sheet 2 m7, 2 F'igA.

' 59 l A V JZ'? Y a7 so* 6@ Fig 1 101 111 Nv NTUAL @im Patented Aug. 13, 1940 UNITED STATES 2,211,075 LAs'rI'NG MACHINE f William Thomas Buckingham Roberts, Leicester, England, assignor to UnitedShoe Machinery Corporation, Borough of Flemington, kN..'., la corporation of New Jersey l f Application February 24, 1939,-'Serial";No. 258,254 In Great Britain Maly 2, 1938 17 Claims.

I This invention relates to lasting machines, and

is herein illustrated as appliedv to a power-operated toe-lasting machine constructed generally as disclosed in United States Letters Patent No.

5,-,A 2,134,148, granted on October 25, 1938 upon an application of mine, .but modified in certain respects as furthervdisclosed in Letters Patent No. 2,140,652, granted on December 20, 1938 upon an-v other 'application of mine. It is tobe understood, 1,03 however, that in various novel aspects the invention is not thus limited in its applicability.

j The machine above referred to is provided with toe-embracing wipers which are moved upwardly to wipe the toe end of an upper heightwise of ltalast positioned bottom upward and are thereafter advanced and closed to wipe the margin of the upper inwardly over an insole on the last, the machine being further provided with upperspreading and retarding fingers which cooperate Ztlawith the wipers to apply to the upper `a pull heightwise of the toe and Which have thereafter a retarding and pleat-dispersing effect on the margin of the upper as the wipers wipe it inwardly over the insole. Substantially at the end of the upward movement of the wipers the last V'is depressed a short distance relatively to the wipers,'a result of this movement of the last and the previous movement of the wipers being that. substantial clearance is provided between n the lower faces of the Wipers and the upper face of the insole to insure against any displacement o f the margin of the insole by the Wipers as they begin to wipe'the margin of the upper inwardly Early in such inward movement of the wipers they are lowered sufliciently to cause them to press rmly on the margin of the upper.

After having completed this inward wiping movement, the wipers are raised adefinite short distanceto relieve their pressure on the margin of 4Q, the upper and are then moved reversely outward nearly to the edge ofthe shoe bottom. Thereafter the wipers are lowered to press again firmly on the upper and receive a second relatively short inward movement to complete the wiping 4 5, operation prior to the driving of a gang of upper- Y fastening tacks in locations beyond their wiping edges. Y i

While a machine constructed to operate as above described has been found to produce very 50.v satisfactory results under most conditions, the present invention has in View certain changes such as to improve the results in operating, for example, on shoes having uppers of comparatively thin or imsy material, 'such as thin glac 55 leather. In accordance with one o-f the features Yof the invention, provision is afforded for the Wipers to rest on the margin of the upper under the influence of gravity as they are partially retracted after their first inward wipingmovement, 60. instead of being lifted and supported at a definite height heretofore. The pressure which the wipers apply tothe margin of the upper, dueto their weight and the weight of their vertically movablel supporting means, is therefore the same in operating 'on different shoes'regardless of the thickness ory resilience of the upper materials, and in operating on comparatively thin uppers this moderate pressure is regarded as sufficient to cause the wipers to redistribute any undesired wrinkles which may have resulted from their rst inward movement, While at the same rtime not vbeing s evere enough to cause the wipers to` drag vtl'iemargin. outwardly toward the edge of the insole. Under some conditionsV it may be desirable, even though the wipers are to rest on the margin of the upper'under the influence ofv gravity, to start their upward pressure-relieving movement positively instead of depending entirely uponfex'pansion vof the upper materials to lift them, and the invention accordingly providesl a construction which maybe used to operate in that manner. Since, moreover, it, may not be desirablefor the .wipers to rest on the upper'under the influence of gravity in operating on comparatively heavy upper materials, provisionis 'also `,afforded for effecting alternatively, as heretofore, a definite relief of their pressure on the upper and for maintaining them at a height ynot determined by the shoe during theirl retractive movement. l

Further to improve the results in operating on dilerent'kinds of;upper materials, the invention providesnovel means 'whereby the amount of clearance between the wipers and the margin of the insole as the'wipers begin to Wipe thev margin, of the upper inwardly over the insole lmay be readily varied.` While it is usually desirable, in operating on comparatively heavy upper materials, to provi'de'as heretofore for substantial clearance between the wipers and the insole at the. beginning ,of the overwiping operation, it is considered' that better results are likely to bev movable to permit thek substitutionof a different.

cam forvarying the position to which the wipers are raised."-

j, In accordance with 'another feature of the Ainvention ,provision is afforded for varying the timein the Yoperation of the machine when the pressure of the wipers on the margin of the upperastthey. wipe it inwardly over the insole isr increased, as may also be desirable in operating on different kinds of work. For this purpose, in the construction herein shown, a rotatable cam which operates to lower the wipers in time relation to their overwiping movement is adjustable about its axis to vary the time of Yits action.

The above and other features of the invention,

including various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims.

In the drawings,

Fig. 1 is a view in right-hand side elevation of mechanism in which features of the invention are embodied, with parts broken away;

Fig. 2 is a view partly in front elevation and partly in section of a portion of the structure shown in Fig. l;

Fig. 3 is a plan View of parts shown in Fig. 2 and of parts associated therewith;

Fig. 4 is a section on the line IV-IV of Fig. l;

Fig. 5 is a section on the line V--V of Fig. 1;

' and Fig. 6 shows on an enlarged scale a cam which may be used in place of one of the cams shown in Fig. 1. i

Except for changes hereinafter described, th machine to which the invention is herein illustrated as applied may be vassumed to be constructed and to operate as disclosed in the previously mentioned Letters Patent No. 2,134,148

when modified as further disclosed in Letters Patent No. 2,140,652. For wiping the toe end of the upper helghtwise of the last and for wiping its margin inwardly over an insole on the last the machine is provided with toe-embracing wipers which, except for changes hereinafter described,

the present drawings. 45"

l shown in Letters Patent No. 2,140,652. poses of the present invention, however, the conoperate in the manner hereinbefore explained, the upper-spreading and retarding ngers which cooperate with the wipers to tension the upper and to control its margin being omitted from Movements of the wipers heightwise of the last are effected, through mechanism hereinafter described, by a path cam 3 formed in one side of a rotatable cam wheel 4, this path cam corresponding to the path cam 82 For purstruction is such that the wipers, instead of being lifted positively to relieve their pressure on the margin of the upper and being maintained at a deiinite height as they are partially retracted toward the edge of the shoe bottom after their first inward wiping movement over the insole, may be permitted to rest by gravity on the margin of the upper as they are thus retracted. To this end, the inner side 5 of that portion of the path cam 3 located between the regions 'I and 9 is a concentric continuation of neighboring portions of the cam, instead of being formed to lift the wipers as heretofore, while the outer side of that portion of the cam is bulged outwardly as indicated at II, so that the cam in this location is wider than a cam roll I3 which it controls. This leaves the wipers free to be lifted more or less by expansion of the oveiwiped upper materials against the force of gravity acting on the wipers and on their vertically movable supporting members I5 which are connected rigidly together by a bridge piece I6, and permits them to rest by gravity on the upper as they are partially retracted. The members I5, in the construction herein shown, are connected by links I8 (only one of which is visible in the drawings) to a forked lever A 29 whichV carries `the cam roll I3. Such expansion of the upper materials may or may not i cause the cam roll I3 to move far enough to engage the outer side of the cam 3 where the bulge II is located, but even if such engagement occurs, it is substantially the force of gravity alone which determines the amount of pressure applied by the wipers to the upper as they are retracted. By reason of this construction, the wipers during their retractive movement will apply to the margin of the upper a moderate amount of pressure which will be substantially the same regardless of the thickness or resilience of the upper materials of diiferent shoes, with contemplated advantages such as hereinbefore explained in operating especially on comparatively thin uppers.

Since it is desirable, in operating on comparatively heavy upper materials, that the wipers be lifted and supported at a definite height relatively to the shoe as heretofore, instead of resting on the upper by gravity during their partial retractive movement, provision is afforded for controlling the wipers alternatively in this manner. For this purpose there is secured on a shaft Il, which corresponds to the shaft 253 shown in Letters Patent No. 2,134,148, a cam carrier I9 which carries a readily removable cam 2| having a stem 22 held by a set screw in the carrier. The cam carrier i9 is secured on the hight-hand end of the shaft I'I which extends outside of the frame of the machine, and, accordingly, the cam 2| is readily accessible so that it may be removed without disturbing any other operative part `of the machine. The shaft I'I rotates at the same speed as the shaft which carries the cam wheel and the cam 2| is so positioned on the carrier I9 that when the cam roll l3enters that portion of the path cam 3 Where theA bulge II is located, the cam 2| engages a roll 23 mounted on a rearwardly extending arm 25 of a lever 2ly pivotally supported on the frame of the machine. A forwardly extending arm 29 of the lever 2l is connected by a downwardly extending rod 3| with a bracket 33 which is bolted to the right-hand wiper-supporting member I5. rAt its lower end a reducedv portion of the rod 3| (Fig. 2) extends through a bore in a trunnion block 35 and is held therein by nuts 36, so that the rod is fixed against upward or downward movement relatively to the trunnion block. A stub shaft 31 on the trunnion block 35 extends into a bore in the bracket 33 and is retained therein by a disk 3S which is secured to the bracket andextends into a groove in the stub shaft. Theupper end of the rod 3| is threaded in a trunnion block 4| which is pivotally mounted on the forwardly extending arm 29 of the lever 2l, the rod being held against turning movement by a set screw 43. It will thus be seenV that the cam 2|, when mounted on the carrier I9, acts through the lever 21 and the rod 3| to lift the wipers a deiinite distance to relieve their pressure on the margin of the upper and to maintain them at the height predetermined by the cam as they are partially retracted. In view, moreover, of the ready accessibility of the cam, it may be quickly removed when desired, so as to permit the wipers to rest by gravity on the margin of the upper in the manner hereinbefore explained. It will be further appreciated that theconstruction provided permits cams of different sizes to be readily mounted on the carrier I9 to vary the amount of upward pressurerelieving' movement which is imparted to the asf sof

Vdto move inwardly.

wipers'. For example,instead of the cam v2| constructed to operate as above described, there may be used a cam 2|', such as shown-on an en-- larged scale in Fig. 6,-which is of less height than Y the cam 2|, -so that it willr start the upward pressure-relieving movement'of the wipersvposi# tively but will not move them far enoughto prevent them Afrom beingAIV further lifted-by ex-l pansion of the upper materials so asto rest by: gravity on the-upperas they are retracted. yThe use of such a cam may be .desirableyfor ex.- ample, inoperating on upper'swhich have -v less tendency than others y to. expand afterhaving been compressed. The relationof the shape'of the cam 2| to that of the cam v2|"is` suggested bya dotted line in Fig-L 6.V Y Y As hereinbefore explained,-L and= as disclosed more particularly in Letters Patent No. 2,140,652, machines of the type to which the inventionl is herein shown as applied have Ibeen so. constructed heretofore that in wiping the upper heightwise of the toe the wipers have been moved upwardly to such a position as to provide forsubstantial clearance between them and -theinsole at the beginning of the overwiping operation 'so as toV place the margin of the insole in that operation;A

the wipers being thereafter-moved downwardv early in their overwiping movement to cause them to press firmly on the upper. Y Whilev`v this produces satisfactory results yinl operating on -comparatively heavy upper materials, better results are likely to be-produced in operating on com-- paratively lightv and nimsy uppers if-'the wipers are moved only to such-a height as to enable them to clear the edge of the insole in" the overwiping operation, with suitableY allowance for the thickness of the upper materials,- and do not receive any downward movement "as theystart The construction herein shown is accordingly such as to permit lvaria-- tions in the amount of upwipingy movement'imparted to the wipers. For this purpose the path cam 3, instead of vimparting the entire upward movement tothe wipers like the corresponding cam used heretofore, is so formed as' to impart to them only a portion ofA this movement, after 3 results from a rise on theA inner side of the cam between the regions indicated at 41; and r49, and beyond the region 49 the inner side 4of the cam presents a concentric surface extending around the cam shaft to the region 53,-this con'-` centric surface efecting'- no further upward movement of the wipers. Between the region 49 and the region 6|, however, thevpath cam 3 is of greater width than the diameter of the roll I3, thus permitting further upward nio-vement' to rise, therefore, until the roll 23 is engaged by a concentric surface 59 on the cam r51. 4The cam 51 is secured on the carrier |9 by a set screw 63 which engages a stem extending from the cam into an opening-in the carrier. rIt will be levidenti that by reason of the locationofthecarrier |9f the cam 51fmay be readilyv removed without dis-" turbing any other operating part-ofthe machine; so that cams of diierent shapes maybe mounted -imparted tothe wipers by the camQ Y y `Provision is aorded for adjusting the plate 69 on thecarrierto vary as desired: the. amountv of upward movement impartedxto the wipers and accordingly the relation ofthe Wipers to the` plane of the toe end ofthe insole at the begin?.I

ning of the overwiping operation'. Byiusing dif-.

ferent cams, therefore, the wipers may be moved to the same height as heretofore or only to such a height that they will just clear :the edgeof the insole-in the overwiping-operation, or they" may be moved to anyintermediate position be:- tween these twoextremes. .l

Theconstruction shown is. further such that,l

ward movement is effected by other means byy which it may be variably timed relatively -to the overwiping` movement of the' wipers. This meansy comprises a cam 61 formed as part of. a

plate 69 adjustably mounted on a gear wheel 1| which is secured to the left-hand end of the: shaft I1 outside of thel frameoffthe machine,

vthe Scam-61 being arrangedto act on a roll 13 mounted on an arm 15 of :a bell-crank lever 11 whichA has a forwardlyextending arm 19 con.

nectedto the left-handone of the pair of wiperf.Y supporting members I5 in the samer manner that;-

the arm 29- is connected to the right-hand supporting member.

The cam 61 has an`inclined` face 8| which is arranged to act on the roll 13y to lower .'.thezwipers as soon as` theconcentric` portion 59 of thecam 51 leaves the roll .23. It;

willbe understood that when the cam 61thus.:

acts to lower the wipers theroll |3 is still locatedin the widened portion of the path cam 3 the cam acts. to lower the wipers, and in .order lthe axis of the gear 1| to vary the time when that the actions of the two cams 51 and 61may. be properly coordinated, cams 51 of differenti. lengths are to be used to correspondl respectively' to` .different adjusted positions of the cam 61;-

Accordingly, by kusing cams51 of the .same thick-A ness but having concentric faces 59 of different:Y

lengths and by adjusting the plate 69 tothe .appropriate positions'for .the different cams 51,:

the wipers may be moved upwardly to the same position, but the time when they arel pressed down on the margin ofthe upper as they are `moved inwardly over the .insole may be varied.`

It. will also be understood that by using cams .51:

of different thicknesses but having faces 59 of the same length, and leaving the plate 69 in theL same position, the heightto which the wipers are moved will be varied while the time when theyv are moved downwardly to cause themv to press firmly on the upper willremain constant. Furthermore, by using cams 51 which vary both in length and in thickness and properly adjusting the plate 69, both ythe height to which the wipers are moved and the time when they are depressed will be varied. If the wipers are moved only to the minimum height, so that they will just,r clear the edge of the insole in the overwip-` ingoperation, the roll 13 will not be near enoughv to vedifferent positions; -For this purpose the platehas therein a radial slot 83 in which lies a block '85 pivotally mounted on an'eccentric por-A non s1 of a shaft a9 rotatable inthe-gear n.15/

L the gear.

Pinned to the shaft 89 is an arm `9| (Fig. 5) having threaded therein a screw 93 provided with a tapered end portion which is arranged to enter any one of a series of ve tapered holes 95 `in It will be understood that after turning the screw to withdraw it from any one of the holes the arm 9| may be swung to adjust the plate 69 to the position determined by any one of the other holes, after which the plate may be locked in adjusted position by turning the screw in the opposite direction. Headed studs 91 extending through slots in the plate G9 and threaded in the gear 1| serve to hold the plate in place von thegear.

The operation of the' wipers under control of the means above described will now be briefly summarized. The initial upward movement of the wipers is derived from that portion of the path cam 3 located between the regions 41 and H19, such movement being effected through the lever 29. Thereafterthe upward movement of the wipers is continued by the action of the cam 51 on the lever 21, the height to which the wipers are raised depending upon the thickness of the cam in use. The wipers are then held in this raised position by the concentric face 59 of the cam 51 until such time as the roll 13 of the lever 11 is engaged by the inclined face 8| of the cam 61, the wipers being moved downwardly by this cam to increase their pressure on the margin of the upper at a time in their inward movement over the insole determined by the adjustment of the cam G1. Thereafter the wipers are maintained in pressing engagement with the margin of the upper during part of their overwiping movement by contact of a concentric surface |43 of the cam 61 with the roll 13. Before their overwiping movement is completed, however, the roll 13 leaves the surface |43 and the wipers are thereafter maintained in pressing relation to the upper during the latter part of their overwiping movement by the action of the path cam 3 on the roll I3 between the regions |45 and 1 of the cam. After the completion of the overwiping movement of the wipers their pressure on the margin of the upper is relieved by reason of the fact that the roll I3 enters that portion of the cam 3 where the bulge II is located, and the wipers begin to move outwardly toward the edge of the insole. At this time the cam 2| on the carrier I9 occupies va position opposite the roll 23 on the lever 21, and if` the cam is of sufficient thickness it lifts the wipers positively to relieve their pressure on the upper, either lifting them only such a shortdistance that they may be further liftedby expansion of the upper materials, or lifting them the full distance required, depending upon the shape of the cam in use. If the cam 2| is omitted, or if its place is occupied by a member which Ais not of such shape as to impart any upward movement to the wipers, the wipers will be lifted solely by the expansion of the upper materials and will thereafter rest on the margin of the upper by gravity as the wipers are retracted.

i After the wipers have` completed their partial retractive movement, they are again pressed downwardly on the upper by the action of the cam 3 on the roll I3. The wipers then receive another comparatively short inward wiping movement and the tacks are driven to fasten the upper. Thereafter the wipers are lifted to relieve their pressure on the margin of the upper by the action of the cam 3 on the roll I3 between the regions 53 and |49 of the cam and the wipers are moved outwardly from over the bottom of the shoe while the roll tracks along a concentric portion I5I of the cam. Finally, the wipers are moved downwardly to their starting position by the action of a portion |53 of the cam.

For clamping the upper against the last around the toe end thereof, the machine is provided with a flexible band 99 of thin steel as disclosed in Letters Patent No. 2,134,148, the band being applied to the upper substantially at the beginning of the overwiping movement of the wipers by operating mechanism of the character disclosed in Letters Patent No. 2,140,652. To insure against any lateral displacement of the toe end of the shoe in the lasting operation, as well as to assist in preventing the formation of objectionable wrinkles in the upper, the construction herein shown includes means for clamping the band against the upper at the sides of the toe. means comprises a pair of clamping blocks IUI arranged respectively at the opposite sides of the toe, only one of these blocks being shown in the drawings. For supporting these blocks and their operating mechanisms each of the two Wipersupporting members I5 has a forwardly extending vertical web |83 on which is supported, on a pivot pin |95, a bell-crank lever |01 having an upwardly extending arm |09. The upper ends of these two arms, only one of which is shown in the drawings, are rounded and lie in lateral recesses provided in members III secured on the forward ends of rods ||3, these rods corresponding to the rods 233 shown in Letters Patent No. 2,134,148. The rods are connected to the ends of the band and are moved forwardly lengthwise of the shoe to apply the band 99 in clamping engagement with the toe end of the upper by drawing it tightly about the toe. It will be evident that in response to such movement of the rods ||3 the upwardly extending arms |09 of the bellcrank levers |01 are swung forwardly. These levers also have downwardly and rearwardly extending arms I I5 each of which has pivotally connected to its rear end a downwardly extending yoke II1 provided at its upper and lower ends with. bearings for a rod` ||9. A spring |2| on the rod II 9 rests at its lower end against the lower bearing portion of the yoke ||1 and at its upper end engages a collar I 23 which is threaded onthe rod and is slidable with the rod in the upper bearing, so that the lifting of the yoke ||1 which results from the Swinging of the bell-crank lever IIl1'in the manner above described causes the rod |,I9 to be moved yieldingly upward. The lower end of each rod I|9 is pivotally connected to the forward end of a short rearwardly extending lever I2 5 pivotally supported midway between its opposite` ends on' a link |21 which is pivotally suspended on a pin` |29 on the web |03. The rear ends of the levers |25 are bifurcated and carry pins I3I which extend through twisted cam slots |33 formed in the lower ends of vertical rods |35i which are rotatably mounted in lugs on the wiper-supporting members I5 and are held against upward or downward movements. Each of the rods |35 has fast on its upper end an arm |31 (Fig. 3) a portion of which extends rearwardly and carries one of the previously mentioned clamping blocks IUI, the block being mounted to turn on a vertical stud |39 on the arm. Each of the blocks IOI extends upward substantially'to the level of the top of the band 99, and has a band-engaging face which is somewhat concave lengthwise of the edge of the shoe bottom. Initially the blocks ||l| are spaced well away` from the band, but as the band is applied This i to theshoe bythe forwardmovement oftherods Y ||3 the downward movement'of the pins, |31 irl the cam slots |33 causestherods |,3 5 to turn in directions to swing the blocks i nto engage ment with the band.. It will be evident-.thatthe Asprings I 2I are yieldable to permit,- continued movement of the rods ||3 after the blocksil have ,arrived in Aclamping, engagement, Witnthe band, so that the bandwill be properly appliedto the shoeand clamped by the blocks regardlessof kthe width of the toe end ofthe shoe. The fblocks,

moreover, are positively held against rreverse movement after they have arrived in their clampf ing positions by reason of the self-locking action of the pins I3| and the Vcam slots 33-. 'W hen the rods ||3 are moved rearwardly to return the band after the lasting operation -the ,bell crank levers |01 move the yokes downwardly and these yokes by engagement with shoulders 1,40 on the rods IIS: swing the levers |25 toimpart Vupward movement to the-pins Il3| andy thus toA swing the blocks IDI outwardly away .from the band. It will be evident that by the action of the blocks not only isthe upper clamped firmly against the lastat the sides ofthe toe to assist in preventing the formation of objectionable Ywrinkles during the action of the wipers onthe margin of the upper, butthe toe end of the last and shoe are also held positively againstany lateral displacement in the lasting operation such as might be detrimental to the properwiping `Aof the upper over the Ainsole andthel fastening thereof in lasted position.V `Novel features of, this work-clamping and holding mechanism Aare claimed in VAa divisional application, Serial No. 289,004, led on August 8,1939. 1 -,g Having described the invention, what -I clairnas new and desire to secure b y Letters-Patent of the United States is:

1. In ,a power-operated lasting'ma-chine',` ,the

f combination with wipers movable to-wipethe margin of an upperA around` an. end ofla `last positioned bottom upward inwardly over the. bot'- tom of the last and thereafter,reverselymovable outwardly over the marginof the upper, of mech7- anism including a power-driven camfor.,holding the wipers down in pressure-applying relation to the margin of the upper asthey wipe it inwardly, said cam being so formed as `to release, the wipers thereafter substantially from control thereof while permitting ,them to rest on the margin` vof the upper under the inuence of gravity during their reverse outward movement. f

3. In a power-operated lasting machine, the' combination with wipers movable `to* wipe., the margin of an upper aroundv an end 4of ,aV last positioned bottom upward inwardly over the bottom of the last and thereafter reversely movable outwardly over the4 margin of the upper, of a power-driven cam and- `mechanism controlled thereby forholding the-wipers positively down in upper as they-.wipe it inwardly, said cambeing .sc formedas to release the wipers thereafter for upward vmovement and permitthem to be lifted by expansion of. the uppermaterials 'and to rest on ,the margin of the upper substantiallynnder .the innuenee of gravityaloneduring their ref operated cam means for eitherlifting the.wiper's .t9-relieve their pressure on the margin of theupf per in such reverse outward movement thereof' or fo;` alternatively permittingthem to, rest on the margin' of the upper substantially under the influe ence of gravity'aloneduring that movement.

5. In a power-operated lasting, machine, the

wcombination with wipers movable to wipe VVthe margin of anupper around an end of a last positioned bottom-.upward inwardly over `the bottom of the last and thereafter reversely movable; out7 wardly over the margin ofthe upper, ofjpower; operated controlling means for holdingthewipers down in: pressure-applying relation to.the'margin of the upper as they wipe it'inwardly `an d f or thereafter releasing them from such .holding force sufficiently topermit them to rest onthe margin of .the uppersubstantiallyunder the in, -iiuence4 of gravity alone during their reverse out# `ward movement, and automatically-operative mechanism arranged for optional use'to lift-the .wipers and' thus relieve?. their pressure -on the margin of the upper when theyare thus-released.

6. In a power-operated,lasting-machine,l the combination with Wipers movabletowipe the margin of an upper aroundany end of a last positioned bottomiupward inwardly over the bottom ofthe lastand thereafter reversely movable outv wardly over the margin of the upper, of mecha;-

nism including a power-driven cam for holding y the wipers positively down in pressure-applying relation to the margin of the upper-as they wipe it; inwardly;and[for thenreleasing them sufficiently. to per mit them tobe lifted, andanother power-driven ca m arranged for` optional useto lift the wipers when they are thus. released-and thereby to relieve their pressure on themarginof the upper in their reverse movement.

'7. In a power-operated lasting machine, the combination with wipers movable tol wipe the margin of an upper around an end'of a lastpoe sitioned bottom upward inwardly over the bottom ofthe last and thereafter reversely movablev outwardly over the margin of theupper, of mechanism for holding the wipers down inpressureapplying relation'to the margin lofthe upper' as they wipe it inwardly and for then automatically releasing them suiciently to permit them to rest on the upper substantially under theinfluenceof gravityalone, and additional meclrariism'- including a power-driven cam for lifting the wipers to 4relieve their pressure on the margin ofthe upper whentheya're thus released, said cam being displaceable at the will .of the operator yto prevent it .fromliftingthe wipers when thev machinev is operated, I

In a power-operatedv lasting machine, the

.pressurefapplying relation tohthemargin .of Vthe y combination with wipers movable to `wipe the marginof an upper around an end of a lastpOSi.- tioned bottom upwardA inwardly over the bottom of the last and thereafter reversely movable voutwardly over the margin of the upper, of mechanism including a power-driven cam for holding the wipers down in pressure-applying relation to the margin of the upper as they wipe it inwardly and for then releasing them from such holding force, and another cam arranged to raise the wipers and thereby relieve their pressure on the margin of the upper in their reverse movement, said other cam being removable without otherwise disturbing the operating parts of the machine to permit substitution of a different cam for varying the amount of upward movement imparted to the wipers.

9. In a power-operated lasting machine, the combination with wipers movable to wipe vthe margin of an upper around an end of a last positioned bottom upward inwardly over the bottom of the last and thereafter reversely movable outwardly over the margin of the upper, of mechanism for holding the wipers down'inpressureapplying relation to the margin of the upper as they wipe it inwardly and for then substantially releasing them to permit them to be lifted, and additional mechanism for automatically imparting to the wipers when they are thus released a short upward movement to relieve their pressure on the margin of the upper while permitting'them to be further lifted against the force of gravity by expansion of the upper materials so as to rest on the upper substantially under the influence of gravity alone in their reverse movement.

10. In a power-operated lasting machine, the combination with wipers movable to Wipe the margin of an upper around an end of a last inwardly overthe bottom of the last and thereafter reversely movable outwardly over the margin of the upper, of mechanism `including a cam for effecting relative movement of the wipers and the last in a direction heightwise of the last to relieve the pressure of the wipers on the margin of the upper after they have wiped it inwardly, a rotatable cam shaft, and a cam carrier fast on said shaft for supporting said cam, the cam being removable from said carrier without otherwise disturbing the operating partsof the machine to permit substitution of a differentcam for varying the amount of such relative movement of the wipersI and the last. u

11. In a power-operated lastingV machine', the combination with wipers movable to wipe the margin of an upper around an end of a last inwardly over the bottom of the last, of means for effecting relative movement of said wipers and the last to cause the wipers lto wipe the upper heightwise of the last before they wipe its margin inwardly, said means including two cams arranged to act one after the other to eiTect such relative movement, one of said cams' being r'emovable without otherwise disturbing the operating parts of the machine to permit substitution of a different cam for varying the vamount of such relative movement.

12. In a power-operatedlasting machine, the

combination with wipers movable to wipethe margin of an upper around an end of alastinwardly over the bottom of the last, of means Ifor moving said wipers heightwise of the last in wip'- ing engagement with the upper before they wipe its margin inwardly, said means* including a cam for beginning such movement of the wipers and another cam for thereafter continuing their movement, a rotatable cam shaft, and aY cam carrier fast on said shaft for removably supporting said other cam to permit a diiferent cam to be mounted on the carrier for varying the amount of movement imparted to the wipers.

13. In a power-operated lasting machine, the combination with wipers movable to Wipe the margin of an upper around an end of a last inwardly over the bottom of the last, of a Wiper carrier supporting said Wipers, diierent cam shafts and cams rotatable therewith arranged to act one after the other to move said wiper carrier heightwise of the last with the wipers in wiping engagement with the upper before they wipe its margin inwardly, and different mechanisms leading respectively from said diierent cams for thus operating the wiper carrier, one of said cams being removable without otherwise disturbing the operating parts of the machine to permit/substitution of a different cam for varying the amount of movement imparted to the wiper carrier.

14, In a power-operated lasting machine, the combination with wipers movable to wipe the margin of an upper around an end of a last inwardly over the bottom of the last, of mechanism for effecting automatically, at a time in the operation of the machine selectively predetermined by the operator, relative movement of the wipers and the last heightwise of the last to increase the pressure of the wipers on the margin ofr the upper.

15. In a power-operated lasting machine, the combination with wipers movable to wipe the margin of an upper around an end of a last inwardly over the bottom of the last, of poweroperated mechanism for effecting automatically, at a predetermined time in the operation of the machine, movement of the wipersy heightwise of the last to increase the pressure of the wipers on the margin of the upper, said mechanism being adjustable to vary the time in the operation of the machine when said movement of the wipers is effected.

16. In a power-operated lasting machine, the combination with wipers movable to wipe the margin of an upper around an end of a last inwardly over the bottom of the last, of poweroperatedmechanism including a cam rotatable to effect at a predetermined time in the operation of the machine relative movement of the wipers andthe last heightwise of the last to increase the pressure of the wipers on the margin of the upper, said cam being adjustable about its axis to vary the time in the operation of the machine when said relative movement is effected.

17. In a power-operated lasting machine, the combination with wipers movable to wipe the margin of an upper around an end of a last inwardly over the bottom of the last, of poweroperated mechanism including a cam rotatable to eiTect at a predetermined time in the operation of the machine movement of said wipers in a direction heightwise of the last to increase their pressure on the margin of the upper, said cam being adjustable about its axis to vary the time in the operation of the machine when thewipers are thus operated, and another cam arranged to move the wipers in the opposite direction heightwise of the last and to control them until said rst-named cam is substantially in position to operate thereon, said other cam being removable to` permit the substitution of cams of different lengths to correspond to different adjustments of said first-named cam.

WILLIAM THOMAS y f BUCKINGHAM ROBERTS. 

